Combined iron and steel pile



(No Model.)

E. S. BRAINARD.

GOMBINED IRON' AND STEEL FILE.

QDWWRMXM N. PETERS. PhnkrLithogmphur. Washinglon, D. c.

NITED STATES EDIVIN S. BRAINARD, OF MANCHESTER, CONNECTICUT.

COMBINED IRON AND STEEL PILE.

SPECIFICATION forming part of Letters Patent No. 324,528, dated August18, 1885.

Application filed January 30, 1885. (No model.)

To all whom it may concern.-

Be it known that I, EDWIN S. BRAINARD, of Manchester, in the county ofHartford and State of Connecticut, have invented a certain new anduseful Improvement in the Manufacture of Composite Metal Bars, of whichthe following is a description, reference being made to the accompanyingdrawings, where Figure 1 is a side view of a piece of tubular coveringused in the practice of my invention. Fig. 2 is an end view of the same.Fig. 3 is a view in longitudinal central section of my improved pile,showing the ends closed by screw-plugs. Fig. 4 is a detail view inlongitudinal section of a piece of one end of a similar pile closed byheading the tube over the plug.

My invention relates to the artof forming composite metal bars, in thepractice of which the different kinds of metal used in the bar areplaced together to form a pile or fagot;

and my invention consists in the improved pile, by which new and usefulresults are obtained in the making of a composite metal bar having asteel center.

My invention is herein described and illustrated with particularreference to its application to the making of steel-centered bars withsofter metal, as iron, as acovering, the bars being intended to be usedin the making of a peculiar centered calk for horseshoes.

The within-described pile orfagot is similar to but an improvement onthe one forming the subjectanatter of a pending application for a patentfiled by me January 12, 1885, and the advantages gained by the use ofthe herein-described improvement are of the same nature as thosedescribed in the above-named application, the finished bar beingproduced with the steel core exactly in the center and continuous fromend to end of the bar, anda great waste of material saved.

In the accompanying drawings, the letter (t denotes a length of irontubing of a kind common in the market,and preferably of iron lap welded.This is of course cylindrical in crosssection, but any other regularoutline may-be used. In the center bore, b, of this tube a piece ofsteel wire, a, somewhat less in length than the tube, is thrust, andboth ends of the tube closed by means of the threaded plugs d, which arescrewed firmly into the threaded sockets in the ends of the tube.

Instead of securing the plugs (l by means of the screw-thread, I mayclose the end of the tube upon the plug, as shown in. Fig. 4, withsubstantially the same results,so far as the pre venting the burning ofthe steel in heating the pile is concerned. The pile thus formed doesnot require to be broken down by a special kind of rolls, as is the casewhere a pile of scraps of irregular outline is used, but it may berolled down to any desired diameter by the ordinary grooved roll, afterhaving first been subjected to a single heat.

A great difficulty arising from a use of the irregular rolls in breakingdown a fagot or pile of scraps of several pieces is due to the fact thatwhere the pile is pinched it is apt to tear the steel central part, andthe bar when completed will have no continuous center of steel, but onemade up of lengths more or less separated.

For the particular use for which I make such bars this forms a strongobjection, as the, absence of the steel center deprives thehorseshoe-call: of the special and peculiar feature desiredthat is, itsself-sharpening feature.

I claim as my invention 1. As an improved article of manufacture, thewithin-described pile or fagot, composed of a tubular-jacket ofsubstantially regular out line in cross-section, a central portion ofanother kind of metal, and having both ends of the tube securely closedby plugs or the like, all substantially as described.

2. As an improved article of manufacture, a fagot or pile composed of alap-welded tube of iron havng a steel center and closed at the ends byplugs of metal, all substantially as described.

EDIVIN S. BRAINARD.

Vvitnesses:

CHAS. L. BURDETT, H. R. WILLIAMs.

